Membrane Fusion

Jane Foley's picture


Dear Ms. Ultrasound,
Hello, I would appreciate your advice, I had a 17 week ultrasound to have an amniocentesis done but the doctor couldn't do it as he said the "membranes had not fused yet" he did not explain anything.

Is this unusually late for them to fuse? i.e. I wondered if this could indicate a problem. I don't know how common this is. Thank you


I don't think I have the information to answer your question accurately. I will guess that the doctor thought the amnion and the chorion had not fused. These are layers of the gestational sac. It would be late for fusion if this is what the doctor was talking about.

To be honest I have never been involved with an amniocentesis that could not be performed for this reason. I think you will have to ask you doctor to explain why you could not have the amnio.

With Regards,
--Jane RDMs